基于模糊控制的污水处理曝气系统溶解氧控制方案研究  

Design and optimization of aeration control system for sewage treatment based on fuzzy control

作　　者：薛同来 张政 高天宇 郜煜涛 杨超 韩菲 XUE Tonglai;ZHANG Zheng;GAO Tianyu;GAO Yutao;YANG Chao;HAN Fei(North China University of Technology,Beijing 100144,China;China National General Machinery Engineering Corporation,Beijing 100050,China)

机构地区：[1]北方工业大学,北京101144 [2]中国通用机械工程有限公司,北京100050

出　　处：《北京水务》2024年第5期31-36,共6页Beijing Water

基　　金：北京市教委科技项目(KM202110009013)。

摘　　要：针对污水厂曝气系统溶解氧的控制问题,在PID控制方法的基础上,改进积分项,引入模糊控制算法,配合Smith预估控制,提出了变速积分模糊Smith PID控制,效果表明:变速积分模糊Smith PID控制在污水处理厂中的控制方法具有良好的优越性。通过对PID控制、模糊控制和Smith预估控制基本原理的学习,将不同的控制思路进行一定的结合,设计了3种针对污水厂曝气系统溶解氧的控制方案,包括传统PID控制、变速积分PID控制及变速积分模糊Smith PID控制。利用Simulink平台,搭建仿真系统,对比各个控制过程的性能,变速积分模糊Smith PID控制器作为控制系统方案在快速性和抗干扰性上都有一定的提升。研究结果能够在理论上对曝气系统控制给予有效的支撑作用。To address the issue of dissolved oxygen controlling in wastewater treatment plant aeration systems,this study proposed a variable-speed integral fuzzy Smith PID control,which improved the integral component of the PID control method by introducing a fuzzy control algorithm combining with Smith predictive control.The results indicated that the variable-speed integral fuzzy Smith PID control method demonstrated superior performance in wastewater treatment plants.Through the study of the basic principles of PID control,fuzzy control,and Smith predictive control,the different control ideas were combined in a certain way.The three control schemes for dissolved oxygen in the aeration system of wastewater plants were designed,including the traditional PID control,variable-speed integral PID control,and variable-speed integral fuzzy Smith PID control.Using the Simulink platform,a simulation system was built to compare the performance of each control process.The variable speed integral fuzzy Smith PID controller as a control system scheme had a certain degree of improvement in the rapidity and anti-interference.The research results can give effective support to the aeration system control in theory.

关 键 词：模糊控制 变速积分 曝气系统 溶解氧 

分 类 号：TU992.3[建筑科学—市政工程]